Calculating-machine.



v PATENTED JUNE 19,- 1906. ,G. H. SEARS. CALCULATING MACHINE.

APPLICATION FILED MAY 24, 1902.

5 sums-sum 1.

nventor.

Www

Attorney IWLtf'IeSSGSLW' PATENTED JUNE 19, 1906. G. H. SEARS. I

CALCULATING MACHINE.

APPLICATION FILED MAY 24 1902.

V 5 SHEETS-SHEET 2.

v I z gwi :19! 10 9 I [a 16 y 50 14/ v o O5 5g 1 f 53 1 65.

7 .fi 6'15 I O E 63 50 59 3 65 Q 3% I 26 50 7 a $3 a. H. SEARS. CALCULATING MAGHINE.

APPLIOATION FILED KAY 24,1902.

PATENTED JUNE 19, 1906.

5 SHEETS-SHEET s.

PATENTED JUNE 19, 190 G. H. SEARS. CALCULATING MACHINE.

APPLICATION FILED MAY24,1902.v

5 sums-sum" 4.

I a.- cuppa. I

Attorney PATBNTED JUNE 19,1906. G. H. SEARS. CALCULATING MACHINE.

APPLICATION FILED MAY 24,1902.

5 SHEETS-SHEET 5.

Inventor.

L Attorney UNITED STATES GEORGE H. SEARS.

AND

HUTHER AND ANGUS E. HUTHER, or

PATENT O OF ROCHESTERNEW YORK; ASSIGNQR, BY DIRECT ass ASSIGNMENTS, orv THREE-FOURTHS TO WARREN B.

ROCHESTER, YORK.

CALCULATING-MACHINE;

Specification of Letters 11mm. Application as my 24-, 1902. serially. oaaeo.

Patented June is, 1900,

To all whom; it'm/ay concern:

Be it known that I, GEORGE H. SEARS,- of Rochester, in the county of Monroe and State of New York, have invented certain new anduseful Improvements in Calculatipge Machines; and I do hereby declare the lowing to bea full, clear, and exact descrip I and reference being had to the tion of the same, accompan drawings, form a part of this speci cation, and to the re erence-numerals ma rked thereon. v Y

My invention-relates t'o' calculating-machines, and particularly to that class known as adding-machmes, and it embodies enerallyfa pluralityof,counter-wheels capab e of independent operation, carryin suitable figures adapted tolcocperate wit suitable indices, whereby the total amount may be readily determined.

My invention further includes transfer devices or carrying mechanism whereby computati'ons on the units, tens,

3 is a cross section'al view thereof on the line view on the lineC or hundreds to orexceeding ten will the next higher it also embodies wheel whenlequal cause the wheel indicati column to be actuated, an

-locking mechanism between each wheel and the next hi their manipu' ation will cause each of them to be, arrested,- indicating1 to the operator in which column an error as oc'cu ed.

To these and other ends my invention consists in certain improvements in constructionand cornbinatioh of'parts, all as will be I features being{ the claims at' the end of the fully described,- pointed out, in I specification. a

In the drawings, tion of a calculating-machineconstructed in accordance with my invention. Fi 2 is an edge view of one of the counter-whee s. Fig.

the novel A A of Fig. 1,. Fig. 4 is a sectional view on the line B B of Fig. 3. Fig. 5 is a sectional C of Fig. 4. Pi s.'6, 7, 8, and 9am cross-sectional views simi at to Fig. 3, illustratin the device in various positions. Fi s. 10 an 11 are detail sectional views ta en on the line D D-of Fig.1. I

erspective view of detac ed parts of the ockmg mechanism, and Figs. 13' and 14 are "llustratingthe operation of the similar views carrying and locking mechan sms. 1

her one whereby an error in 1' is a front eleva-' figures indicatesimilar parts.

i A calculating-machine constructed in accor-dance with my frame orcasing 1, 1n whichis arranged a series of counter-wheels, (indicated by 2, 3, '4, ii 5,) which are journaled loosel upon a shaft "'6. i The several counter-wheels are similar, and a description of onewill sufii for all and in Fig. 2 is shown a detailview of one of them, showing the face or rim vided at one side wit the ten'figures or iglts reading from 0 to 9, the circumference or a multiple of ten figures may be emplo ed.

multip es, and at one side the rim is provided ure thereon. erally-projecting' pins are similar pins or lugs which will be further explained, together'with the description of the cooperating parts. The casing 1, beforereferred to, is provided ands 1 1, which overlie the rimso ranged in successive order from lower ends to 9 at their upper ends, and in each of the bands in place of one of-the figures, preferably the figure 5, is provided an aperture 13, through which the res on the counter-wheels may constituting an indicator for their respectivewheels. q

At the commencementv of a computating Fig. 12 is a or adding operation the several counterwheelsare set so that the zero on each is in line with the aperture or indicator, as shown .at the right-hand side of Fig.1, and to assist the operator in setting the wheels there are rovided between certain of the teeth or proections 8 suitable indicia 14, as shown on the wheels 3 and 4' in said figure, whereby the opjerator may ascertain the required distance to revolve .a counter-wheel to bring the zero -characterthereon in line with the aperture or indicator. The severalcounter-wheels arranged side by side correspond to the units invention embodies a.

of the wheel being of such a length that ten In the v resent instance-I have employed our with teeth or projections 8, one for each fig and are provided with the figures or digits ar- 0 at their tens, hundreds, thousands olumn,

Similar reference-numerals in the several 5 7 On one edge of the rim are lat- 9, and, onthe spokes IOfthe function'of .with the curved face, slotted toallow the 1 teeth or projections onthe.

be read, said aperture slot isproportioned in 4 dogs or pawls 15, one for each w vicesand said pawls, and a releasing mec aning over a rod or shaft26 and pivota shown in- Fig's. 9 and 10, s rings 33, connected to the arms 28 and tot e p point serve to normally support the the. elevated &c., and to add a digit in any of said columns the operator inserts his finger between the teeth 8 thereof opposite the number hedesiresto add, which is shown on' the bands .or indexes, and moving it downwardly revolves the wheel in the direction indicated b the arrow in the several figures until his nger reaches the end of the slot in the casing or cooperates-witha suitable stop. The rotary movement of the counter-wheels in the opposite direction is prevented by sprin -operated v eel, jour ed on a shaft 16' and engaging the teeth 8. To prevent the spinning of the counterwheels and arrest their. forward movement, I arrange a locking mechanism adapted to be operated at the end ofeach operation of a counter-wheel. In the presentinstance thismechanism embodiesvertically-movable keys, op-' erating upon suitable pawls adapted to arrest their respective counter-wheels, and o erating connections between the carryin ism therefor controlled the operation of the keys, so that unless the latter are actuated their respective counter-wheels and also the nexthigherwheel are locked toindicate an error in the computation, all as will be more fully described. These keys are indicated by 20, 2 22, and 23,,each of them being attached. to a 'de-plate 24, having its lower end provideif with a curved slot 25, operaty tached at its upper end to the connected lever-arms28, loosely 'ournaled on'the shaft 291, The keys are a apted to move vertically a distance .of one space on the counterwheel, and the lever connection and curved such a manner thatas buffer 116 of ru a key 18 depressed it is moved approximately parallel with the face of its counter-wheel, as and retractile ates 24, extending across their ivotal eys in- A I position. Journaled on the shaft 26 in line with each counter-wheel is a locking stop 34, provided at its upper and rear side with a cam-surface adapted to be engaged by the lever-arm 28 on the key when. the key is depressed to throw the stop into engagement with the teeth 8 on said counterwhee as shown in-Fig. 6, to revent its furj ltherflforward' movementunti the key is re- 0 P The carrying devices, by means of which I each succeeding counter-wheel is operated from the former, consist of a series of operating-levers (indicated by 40, 41, and 42) lo c'ated' between the counter-wheels, theadjacent counter-wheel atone side serving to ac-' tuate the lever and for convenience in explanation being termed the lower wheel, while the one operated by said lever is called. the higher wheel, and as these levers and their connecting parts are similar in construe tion and operation a description of the details of one will suffice for all. I

Each of the operating-levers is provided at one side with a stiffening-rib, as shown, and it is journaled upon the shaft 43 and'is provided with the outer end curving over the shaft 6 and ada ted to rest upon a collar or liber or leather on the shaft 6 'osition, as illus s.,3, 8,,and 9. At

when in the ino erative trated by dotted ines in Fig the ,outer end of the lever is provided a face 44, with which successively en age pins. 10, carried on the lower counter-w eel, so that the end of the lever is carried upwardly to the position shown in Fig. 6, the parts being so arranged that the pin 10 passes off from the face 44 and only releases the lever as the counter-wheel is o erated to record from units to tens in case of t e units-wheel or from tens to hundredsor hundreds to' thousands, respectively, if this description is applied to t e tens or hundreds. wheels; ing thus released may fall by gravity, .or it maybe assisted by a downward movement adjacent counter-wheel one space-by means of a pivoted pawl 47, operated by a light spring 48 and allowed to tri over one of the teeth 8 as the lever is raised in rear thereof revolves the higher counterwheel forward the distance of one space, the rearward movement of the counter-wheel being prevented by the pawl 15, as will be un-v derstood; Upon the side of the lever next to' the lower or actuating counter-wheel is a lug or'projection'49, (see ed when the lever is elevated to lie in the path of projections or pins 9, formed on the rim of said wheel and correspondin in numher to the pins 10 thereon, which atter are arranged one for each set of of ten figures emplo ed upon'thecounterwheels. The lugon til 0 eration of the adjacent counter-whee but if the return of said lever is prevented by means to be further described-it causes the lower or actuating counter-wheel'to be locked by thepin 9 en lter-wheels are rther locked if for any reason there is afailure to properly operate the keys 20, 21, 2 2, and 23 by mechanism controlled by the ca g devices reviously ex lained and whic will now e described. ournaled in the casing is a shaft 55, arranged between the shafts-26 and 29, and loosely mounted thereon are small levers 56 57 58, connected by means of links 59 with their res ective operatin -levers 40, 41, and 42, said evers 56, 57, and 58 carrying pawls 60, cooperatin with ratchet-whee s 61-. The latter are also oosely 'ournaled on the shaft 55, and formed integra ywith them are similar ratchet-wheels 6'1, with which cooperate spring46, and ln'its it propels the higherand engaging it.

digits or multiple e lever insures the positive return of the latter and the conseil uent aging the lug 49. The coun- The lever be- Figs. 5 and 13,) adapt- .65 and 6, when it seesaw;

pawls 62 on arinsv 63 rigidly secured to and operated by the shaft 55 and constituting a part of the releasing mechanism, the eration of which is to be further describ A rocking movement is imparted to this latter shaft by the act of depressing any of the keys 20, 21, 22, or 23 as the arms 28, connected to said keys, engage a rod 32, extending 'longitu dinally beneath them and supported in arms and31, attached to the shaft 29. One of the supportingarms is provided with an extended end carrying a pin 63, o crating in -a slot in an-arm 64, attached to t e rock-shaft and forming a toggleconnection therewith, 15 and a spring 32'," attached to said arm, causes the releasing mechanism to bejreturned to its normal position after each operation. 'The teethof the ratchet-wheels 61 are in alinement, a thereon are arranged in such manner that the and 61" awls 60, carried upwardly b the operatingevers,o eratefirst upon the ownward movement 0 .the respective levers to Jmove the ratchet-wheels a distance equalto one-half z 5 the len th of a tooth, and the pawls 62, 0 erating t ough an etgual distance, compete;

their movement, all

or a purpose to be presentl described.

0 instance shown as located between them is a 'governmg-Wheel positioned in line with and controlling the operation of the locking-stop 34, provided upon its peripherywith teeth 65 and 66, arranged in pairs, one pair for each of 5 the teeth on'the ratchet-wheels 6161, and

between each of said pairs. of teeth are deeper notches or recesses 67. These teeth on the governing-wheel cooperate with a projection 68 on the stop 34 and serve to move it to-- ward the counter-wheel and to throw its end between two of the teeth 8 thereon, and in case the ratchet-wheels are only revolved one-half a' ste the projection en aging'between'the teet -65'and 66 causes t lock the counter-wheel. Each operating-lever as it is raised'by one of.the pins 10 on the lower counter-wheel carries its awl 47 over one of the teeth 8 on the. big er counterwheeland rotates the lever 56 to retract the pawl 60' a short distance beyond one of the teeth of the ratchet-wheel 61.. As the lever isreleased b the disen a ement of the pin.

Y g e 10 it is allowed tofall, the 0st motion occurringv before the pawl60. engagesthe tooth of the ratchet-wheel 61, permitting the pawl 47 to rotate the higher counter-wheel a 'suflicient distance to advance one tooth beyond the pawl 34 before the latter is actuated by the governin -.wheel to lock said higher counter-v wheel. ontinued manipulation of the lower counter-wheel through a distance of ten spaces without depressin one of the keys 20, e carrying lever to 21, 22, or 23 will cause t be elevated to the osition shown in igs'g 5 1 be prevented fr m 1'6- d the parts operating 67,. The stop 34 being then retracted by its I spring 34 frees its counter-wheel and the lat- Also attached to the rate et-wheels 61 and 61 and in the present 1 appear beneath the indicators orapertures 13;

e pawl to- 33 and the stop is also retracted by the spring dreds, and thousan s are shown with the indicia 14 restin after wheel 2 in Fig. 1.-

turning to its normal position by the engagement of it's'ppwl 47 with the locked counter-' wheel. If t e operator has failed to notice .the. inoperativeness oflthe higher counterwheel and continues to manipulate the next lower one, it in turn-will also belocked by one of the pins 9 abuttin against the lug or projection49. This loc operation may occur between any two a jacent counterwheels and indicates a failure on the part of 7 5 the operator to de ress one of the keys 20,

21, 22, or 23 there mechanically indicating a probableerror 1n the computation. If the keys'are properly depressed, the rockshaft is moved .to carry the pawls 63 downward, when one of said pawls will en- ,gage beneath the'ne ct tooth on the ratchet- .wheel 61!,thathas reviously-been moved one step by the paw spring'32 causes the ratchet-wheels'to be moved a second step, the latter movement.

advancing the overnor-wheel one space, and the tooth 66 t ereon passing the projection 68 allows the latter to drop into the recess 1 ter is advanced one space by the operatinglever in returning to its normal position, as shown-inFig. 3. i

; The 0 eration of the machine as it occurs in ractice will now be described. "In the beginning the operator sets all of the counter-:- wheels so that the zeros or ciphers on each in-the index -bands 1'1. i To do this,the oper- Y ator beginswith the units -wheel, (placing his finger in a notch bearing the in icia 14 and revolvin it'downwardly until theffin er engages the hey 20, when by depressing t e la'tterthe stop 34 is thrown into enga ementv with the counter-wheel to limit its ther movement, -..The key being then released is returned to the normal position by the spring 34' Following this 0 eration the tens, huncounter-wheels are each set at zero in a similar manner, and in Fig. -1 these wheels (indicated by3, 4, and 5) the last operation 0 posite the numera s 1 3,v and 7: on t e bands 11. This, how-' ever, is of no moment, and the operator sets the counter-wheels in the order named'by placing his finger over the indicia '14 on each, revolving them forwardly, at the end of which operation all of the counter-wheels stand at zero in the osition showmby the 0 clearly comprehend the operation of the arts, let it be consid-- ered that it is desire to. obtain the sum of the two numbers "721-";an'd 689." Selecting the first number, the operator then revolves the units counter-wheel one space,

the tens-wheel two spaces, and the hundreds- 60,-and the rock-shaft I being returned to normal position by the loo" res

I 39 ward movement of the lever the the lever 56 was v insaid 1.. Then when wheel seven spaces b with the respective w ures 1, 2, and 7 on t e index-ban s 11 and rotating the wheels downwardly until his finger engages thekeys 20, 21, and 22. Subsequently he operates the several counter-wheels successively in the same. manner to add the number "689 by' moving the units wheel nine spaces or teeth, the 'tenswheel eight spaces, and the hundreds-wheel six spaces by enga mg the teeth 8 with the finger-opposite the firm-es 9, 8, and 6, respectivelg, on .theindexsb'ands 11 and moving it. ownward'u'nti'l the finger enga es the keys at the lowerends of the slots. he

numer'alson the four counter-wheels appear-' I .ing'through the apertures 13 in the first in,

stance, reading from left to right, are 0 7 2 the units-wheel was moved nine. spaces thesecond time one of the pins 10 engages the face 44;on the lever 40, moving it upwardly from thep osition shown in Fig. 3

to that shown in Fig. 6 but as the sum of nine and one is ten one must be transferred to the next higher This occurs as the p asses out of en agement with'the face 4% of the operatingever, the pawl 47 thereonpropelling the counterwheel 3 forward one space as the lever returns to itsnormal position. Duringthe upawl 60 on ating ratchet-wheel 6.1 and enga g therewith, as shown in Fig.6, revolves'tfiiratchetwheel in the direction indicated bythe arrow -9, and e ther previous toor simultaneous with the operation of the key 20, de endent 1 -upon the number of spaces throug') 1 with it the rod 32, movnig'the rock-shaft 45 guired to' carry Fig. 11. the pawls moves the governor-wheel to throw' which the first wheel is operatedjbefore eing res one to the tens-wheel. movement of the key 20' carries ownward to the position shown in ig. 10, causing the pawl 62 to engage a tooth on the ratchet-' the stop 34 into operative position, thus lockmg the ad acent and next higher counters wheel against further rotationafter the carhas been effected until said rying movement stop is released by the second-step in the movement of its respective ratchet-wheels to v V 0 governor-wheelpast the ro ect1on 68 on said pawL; The

carry the tooth 65 of the above cyc e of operation is completed in turn as the tens counter-wheel is moved the ei ht spaces and as the hundreds counter-whee is moved the additional six spaces, so that upon reading the figures nowa-pp the apertures we have-1 410, thearit metical sum of the numbers 721 and er'able by the dri or tens counter-wheel. I

moved around its cooper-I figure .to the position indicated in Fig.

ment of The leasing 1 tion with counter one, means for locking the and a locking device operable to arrest the operating to release the car-' earing 'thro h' cease? in-the descri tion. v

. While I ave shown onlyfour counterwheels, it will be understood that an desired number may be. employed. -A di erent arrangement of the without departing from the s irit of inventionas, for example, instea of using the two ratchet-wheel 61 61'j the pawls 60 62 might be arranged to operate successively upon one of them.

I claim as invention- 1, In a 09.10 tion with a plurality of counter-wheels and carrying devices arranged between adjacent wheels and actuated by one wheel to revolve the other, of a lock' mechanism for arresting the movement d the driven wheel opi wheel, and devices operated independent y of the counter-wheels for releasing said locking mechanism.

2. In a calculati -Inachine, the combination with counter-w fieels and stop devices 00- operating therewith, of ca devices be tween thewheels actuated y one of them, means for locking the carrying devices controlled bysaid stop devices.

3. In a calculati -machine, the combination with counterrvlr fi operating between the wheels and manuallyo erated stops for limiting the movement of t e wheels and means for locking the carrying'devices controlled by the operation of the stops. 1 v

4. In a calculating-machine, the combination with a plurality of counter-wheels, of carryingldevices actuated by one wheel to move anot er, stop devices for arresting the moveengaginghis I er 68 9 which were arbitrarily selected to aid eels opposite the the counters-wheels and mechanism controlled by the ,movement of thestops for governing the movement of the carrying departs may be employed ating machine, the combine 1 eels, of carrying devices .5. In acalculating-machine, the. combination with a plurality counter-wheels 'andinianually-o erated stop devices cooperating therewith, o carrying devices and mechamsm actuated b the stops for governing the movement of t e carrying devices.

. 6. In a calculati tion with counter-w orders, a c lower wheel and -machine, the-combinaeels of higher and lower cooperating with the mento the carryingdevice and means for rethe .latter at the completion of the movement of elower wheel.

' 7. In a calc Ming-machine, the combina- -w eels of higher and lower actuated by the with the higher ea 1 idevices orders, of earryl' devices lower wheel and c operating lower wheel and device actuated by the ng higher.

one, a overning mechamsm arresting moveof manually-operated 8. In a cal'culatin machine, the combination with counter-wheels of higher and lower orders and a.carrying device actuated b the lower wheel and cooperatin with the higher one, of a governor operate by the ca device to lock it in actuated position and means cooperating with the governor to release said carrying device.

' 9. In a calculatin machine, the combination with counter-W eels of higher and lower orders and a carrying device actuated b the lower wheel and cooperatin withthe higher one, of a governoroperate b he carryin -device to lock. it inactuated position an means operated at the completion of the movement of the lower wheel to release said 'carrying device.

10. In a calculatin .nation with counter-w eels of higher and lower orders, a carrying device actuated by the lower wheel and cooperating with the higher a one and a stop for the lower wheel, of a governor actuated by the carrying mechanism.

and cooperatin with the stop to lock the lower wheel an means cooperatin with'the overnor to release said wheel an carrying evices. 7 1 11. In a calculatin machine, the combination with counter-w eels of higher and lower orders, a carrying device actuated by the lower wheel and cooperating with the higher one and a sto for the higher wheel, of a governor control mg the movement of thecarrying device and actuating the stop and means for operating the governor to release the higher wheel and carrying devices. a

12. In a calculatin machine, the combination with counter-w eels of higher and lower orders, a carrying device actuated by the lower wheel and cooperating with the higher one and a stop, of a governor controlling the carrying device and actuating the stopinto engagement with, one of the wheels and means operated at the completion of the movement 0 the lower wheel to actuate the governor into position to release said carrying devices and stop.

1 In a calculating-machine, the combinat on with. counter-wheels of higher and lower.orders a carrying device actuated by the lower wheel and cooperating with the higher one and a stop for limiting the movement of the higher wheel, of a governor actuated by the carrying device to operatethe sto mechanism for arresting the movement of t e lower wheel cooperatin with the governor to release the higher wfieeland carrying devices.

14. In a calculating-machine, the combination with counter-wheels '0f higher and lower orders and carrying devices between them, of means for arresting the higher wheel actuated by the carrying devices, locking mechanism for the latter and means cooperating therewith and with the lower wheel to arrest its movement andtrele'ase the higher wheel." 15. In acalculating-machine, the combination with' ahigher and lower counter-wheel, f carrying devices engaging the higher wheel and actuated by the lower wheel mto operative position and meansfor looking it in such position, of a device operatedat the completion of the movement of lower wheel for releasing the carrying device.

16-. Ina ealculating-machine,.the combination with a higher and lower counter-wheel carrying devices engaging the higher whee and actuated by the lower wheel mto opera- I tive position and means for looking it in such v position, of a movable member separate machine, the combi-' from the lower wheel and operated at the completion of the movement thereof to release the carrying device,

,17. In a-calcu atin machine, the combination with counter-w eels and carryin devices between them actuated by one o the the carrying devices to lock the other counter-wheel and separate releasing devices operated independently of the carrying devices for restoring said mechanism to its normal position.

18. In a calculating-machine the combination with counter-wheels and a carryin device between them and actuated by one o said wheels, ofa-stop operated bythe carry-- wheels, of a locking mechanism operated by mg device to-engage the other counter-wheel and releasing devices capable of operation independently of the carrying device 'fordisenagin the sto g 19.- In a calzzulating-machine nation with counter-wheels and a carrying device between them, ofa sto and operating connections betweenit and t e c device, whereby the stop is operated mto en- I the combiga ement'withone of'the counter-wheels to c it and also look the carrying mechanism, to prevent its return movement and a releasing device for restoring said parts.

'20. Ina calculating-machine, the combination with counter-wheels and carrying devicesbetween them, of a stop, connections between it and the carrying mechanism operating the stop into engagement with one of the wheels and preventing the return of the carrying devices, a projection on the other wheel adapted to engage the stop on said cara ryin'g device, to limitits movement, and

means for disengaging the stop to release the arts. v

P 21. In a calculatin machine, the combination with counter-w eels, and carryi devices between them, of a movable stop apted'to engage one of the wheels, normally held in an inoperativeposition, a governing device cooperating with the stop, connections between said device and the carrying devices,

and separate manually-actuate ing the stops to arrest the movement of the counter-wheels, and carrying devices be; tween the wheels, of a governin device for each stop, operating connections etween the governing devices and the carrying devices causin the stops to engage their wheels when tile ea g devices are operated, and releasing mec anism operated by the keys causing the governing devices to disengage their stops.

23. In a calculating-machine, the-combination with counter-wheels havin teeth thereon, stops adapted to engage the Iatter, a separate key for each wheel actuated at the end of the movement of the latter to'operate the sto into engagement therewith and carrying evices between the wheels, of a gov-.

erning-wheel cooperating with the stops, con nections between the carrying devices and the governing-wheels to throw the stops into operative position and restoring devices'actuated by the keys to operate the governing wheels and permit the stops to return to the inoperative position.

24. In a calculating-machine, the combinationwith a plurality of counter-wheels, gawls adapted to engage them, and carrying evices between the wheels, of governingwheels for the pawls, connections between each of the latter and thecarrying devices 0 stated by an "adjacent counter-wheel to t w the stop of the next higher counterwheel into engagement 1 therewith, keys adapted to bee erated at the completion of the operation -0 any of the counter-wheels and restoring devices operated by said keys to revolve .any of said governing-wheels, previously operated, to limit the stops operated thereby to be disengaged from their counterwheels. v v

25. In a calculating-machine, the combination with relatively arranged higher and lower counter-wheels, stops adapted to enfisiige therewith, the stop engaging with the ing device between the counter-wheels, of a governing-wheel provided with teeth argher wheel having a projection and carryranged inpairs having recesses between said pairs of teeth and ada ted to cooperate with the projection on sai stop, a ratchet-wheel connected to the governing-wheel and a pawl et-w'heel operated v cooperating with said ratc y the carryingdevioe to actuate'the governmg-wheel and move the stop into engagement with its counter-wheel, movable keys inde-.

pendently o erating the stops to arrest the movemento their respective counter wheels and a restoring device actuated by each key to move the governing-wheel one space to permit the stop to return to its inoperative positiom 7 '26. In a calculating-machine, the combination with. relatively arranged higher and lower counter-wheels having teeth thereon, an operatingiever between them cooperating with the gher wheel to actuate it, a'pro- 'ection on the ower wheel for operating the lever, as the wheel is. revolved, means for locking the higher counter-wheel and releasing devices 0 erated at the completion of the movement 0 the lower wheel.

27. In a calculating-machine, the combi nation with relatively movable higher and lower wheels, of'an op'eratin -lever carryin a pawl adapted to engage t e higher whee and provided with a stop, a projection on the lower wheel operating the lever to cause the pawl thereon to \be raised into engagement with the counter-wheel, locking mechanism operated by the lever to prevent the movement of said higher counter-wheel, a projection on the lower wheel. adapted to engage the stop on thelever to limit its movement until the higher wheel is released, and mechanism operated at the completion of the movement of the lower wheel for releasing .the'hi her counter-wheel.

28. n a calculating-machine, the combination with relatively higher and lower counter-wheels having a luralityof series of numerals thereon rea ing from zero to nine,.

means for limiting therotation of a wheel throu h a distance of more than the space occupied by the ten figures at a single operation, of a member cooperatin with the hlgher wheel, projections on the Iower wheel arranged one for each multi le of the ten figures thereon and adapte to operate the member into osition' to advance the'higher 'counter-wheel one space, a locking mechanism preventing the operation of said wheel and releasing devices for the locking mechanism actuated at the completion of the operation of the lower wheel. i

' 29. In a calculatin machine, the combination with relativelyiigher and lower coun- -ter-wheel s having a plurality of series of numerals thereon reading from zero to nine, an index-plate extending overthe wheels providedwith indicators cooperating with a single-figure on eachwheel and having figures corresponding to those'on the wheels and locking devices, adapted to engage the wheels, of a keyoperated at the completion ofeach movement. of a' counter-wheel to throw the locking devices intoen agement therewith, anioperating member a apted to engage the big er wheel, a fprojectlon arranged upon the lower wheel or each multipic of ten figures thereon adapted to operate the member into position to advance the higher counter-wheel one s ace, connections between the locking mec anism and the portions the w matic carrg'ling mechanism operating portions of the wheels.

member to prevent the movement of the lat-= {{er and a releasing device actuated by the 0. In a nation with the separately-operable units, tens and hundreds counter-wheels having operating portions at their peripheries, autoetween the wheels,loc ng devices for arresting said-v wheels actuated by the carrying mechanism and devices for releasing the poking mechan-' ism arra ed in proximity to the operating eels. 31. .In a. calculating-machine, the, combination with the separately-operable counterwheels having operating portions at their eripheries, automatic ca g mechanism etween the wheels, locking devices for the wheels controlled by the carryingggechanism and releasing devices for the loc g devices having operating portions in proximity to the 32. In a calculating-machine, the combination with the separately-operable counterwheels having operating portions at theirpe-' ripheries, carrying devices between them, looking devices for the wheels and means arrange in proximity to" the operating tions of the wheels for releasing the Ice c, one ,of t

devices at the end of the operating movement of the wheels.

33. In a calculat' -machine, thercombi nation with separate y operable counterwheels, locking devices for arresting said wheels and carryinimechanism between the latter, connections etween it and said looking devices and a releasing'mechanismmf anthe locking devices and the releasing mech-' arusm. I i

35. In a calculating-machine, the'combination with counter-wheels, a pivoted lever operating between them adapted to engage e wheels, and a projection on t e other wheeladapted to engage the leverto move it into the operative position, of lockin stops pivoted in front of each wheel, manua ly-operated keys for engaging said stops to throw them into engagement with their counter-wheels and 'overning-wheels, located in rear of the sto s, aving teeth arranged in pairs and provided calculating-machine, the combithe rearward movement of said w with recesses between I each pair of teeth, connections between the respective lever and governing-wheel-for each counter-wheel,ope'ratin to actuate the stopj into engagement with its counter-wheel, a

r operated by the keys, and con-.

. nections between the shaft and governing wheelsto move the latter and permit the stop controlled thereby to be disengaged from its counter-wheel; t 36. In a calculating-machine, the combination with a. her and a lower counterwheel having teet thereon, a pivoted lever operating between them and carrying an opera'tmg-pawl, a projection on .the lower wheel coeperating with the lever to raise it and carry the pawl over a tooth on the higher counter-wheel and pawls efeventing eels, of a pivoted stop in linewith each wheel having a cam-surface thereon, a governi device en.- gaging said stop toalternately t ow it into engagement with the teeth on the wheel andto re ease it and a ratchet wheel connected to the eve device, a toggle connected to the. ever an carrying a pawl engaging the ratchet-wheel whereby the governing deviceis actuated to engage the stop with the counter-wheel, a key movable into engage-V ment with thestop to independent? operate 0 actuate it and devices connected to the key the governing device and release the stop.

37. In a calculating-machine, the combi-' nation with a hi her. and a lower.counterwheel having teet thereon and pawls limiting their movement in onedirection', of an opcrating-lever extending between them havgaging the teet on the higher wheel, a pro 1ection on the lower wheel cooperating with the face on the lever to operate the latter and carry the pawl thereon over one tooth on the higher counter-wheel, a loc mechanism actuated by the lever'to arrest t e movement of said counter-wheel and releasing devices. 1 38. In a calculating-machine, the combination with a plurality of counter-wheels, car'- ing an 'engagin face and carrying a pawl enrying devices arranged between the wheels and a stop for eachcounter-whee'l separate governing devices for each stop to a ternately operate and release them, a shaft, and ratchetw eels journaled. thereon :and attached to said governin devices, ofarms connected to thecarrying evices,journaled on the shaft and carryin .pawls cooperating with the ratchet-whee s to cause the stopslto be throwninto operative position, separate arms rigidly attached to the shaft: rovided with awls also cooperating with sai ratchet whee s to cause the stops to be released and means for rockin said s aft. 39. In a calcu ating-machine, the combination with a plurality of counter-wheels having teeth, carrying devices between them and pivoted stops adapted to engage the wheels havi cam-surfaces and pro'eetidns, arockshaft aving arms thereon, o ratchet-wheels- 10urnaledon the shaft, projections carried on,

the ratchet-wheels engaging. the projections onthe stops to throw the la-tter into en a e ment with their respective counter-w 188 s, and arms journaled on the shaft having awls thereon enga 'ng the ratchet-wheels an connected to t e carrying devices, separate pawls cooperating with the ratchet-wheels carried by the arms attached to said rockshaft, a key for each counter-wheel adapted to'be moved into engagement with the camsurface on its respective stop, a bar ada ted to be moved by the operationof any 0 the GEORGE H. SEARS.

Witnesses:

-G. WILLARD RICH,

ELIZABETH J. PERRY.- 

